2024
Angiotensin II constricts mouse iliac arteries: possible mechanism for aortic aneurysms
GADANEC, Laura Kate, Kristen Renee MCSWEENEY, Peter KUBATKA, Martin CAPRNDA, Ludovit GASPAR et. al.Základní údaje
Originální název
Angiotensin II constricts mouse iliac arteries: possible mechanism for aortic aneurysms
Autoři
GADANEC, Laura Kate, Kristen Renee MCSWEENEY, Peter KUBATKA, Martin CAPRNDA, Ludovit GASPAR, Robert PROSECKÝ (203 Česká republika, domácí), Jozef DRAGASEK, Peter KRUŽLIAK (703 Slovensko, garant, domácí), Vasso APOSTOLOPOULOS a Anthony ZULLI
Vydání
MOLECULAR AND CELLULAR BIOCHEMISTRY, DORDRECHT, SPRINGER, 2024, 0300-8177
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
30201 Cardiac and Cardiovascular systems
Stát vydavatele
Nizozemské království
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 4.300 v roce 2022
Organizační jednotka
Lékařská fakulta
UT WoS
000964127200002
Klíčová slova anglicky
Abdominal aortic aneurysm; Angiotensin II; Angiotensin type 1 receptor; Angiotensin type 2 receptor; Vasoconstriction
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 12. 7. 2024 12:46, Mgr. Tereza Miškechová
Anotace
V originále
Abdominal aortic aneurysms (AAA) result from maladaptive remodeling of the vascular wall and reduces structural integrity. Angiotensin II (AngII) infusion has become a standard laboratory model for studying AAA initiation and progression. We determined the different vasoactive responses of various mouse arteries to Ang II. Ex vivo isometric tension analysis was conducted on 18-week-old male C57BL/6 mice (n = 4) brachiocephalic arteries (BC), iliac arteries (IL), and abdominal (AA) and thoracic aorta (TA). Arterial rings were mounted between organ hooks, gently stretched and an AngII dose response was performed. Rings were placed in 4% paraformaldehyde for immunohistochemistry analysis to quantify peptide expression of angiotensin type 1 (AT(1)R) and 2 receptors (AT(2)R) in the endothelium, media, and adventitia. Results from this study demonstrated vasoconstriction responses in IL were significantly higher at all AngII doses when compared to BC, and TA and AA responses (maximum constriction-IL: 68.64 +/- 5.47% vs. BC: 1.96 +/- 1.00%; TA: 3.13 +/- 0.16% and AA: 2.75 +/- 1.77%, p < 0.0001). Expression of AT(1)R was highest in the endothelium of IL (p < 0.05) and in the media and (p < 0.05) adventitia (p < 0.05) of AA. In contrast, AT(2)R expression was highest in endothelium (p < 0.05), media (p < 0.01, p < 0.05) and adventitia of TA. These results suggest that mouse arteries display different vasoactive responses to AngII, and the exaggerated response in IL arteries may play a role during AAA development.